Conveying device for ice slurry cleaning system

Abstract

Disclosed in the present invention is a conveying device for an ice slurry cleaning system. The conveying device is a centrifugal pump, and comprises a volute casing (1), an impeller (2) and a rotating shaft (3); water pumping chambers (15) are provided on the inner peripheral side of a pump housing; the impeller comprises a rear disc (21), a front disc (22) and blades (23). The conveying device is characterized in that: in an axial direction, a flow dividing wall (16) is provided in the middle of each water pumping chamber, an annular mounting slot (18) being formed in the radial inner side of the flow dividing wall, and a flow dividing ring (17) being mounted in the annular mounting slot; a matching slot (28) is formed in the rear edge side of each blade; the radial outer end of the flow dividing ring is embedded into the annular mounting slot, and the radial inner end thereof is inserted into the matching slot. The present invention can reduce uneven pressure distribution and vibrations generated thereby due to turbulent flows at the outlet sides of impellers and water pumping chambers, thus improving the operation stability and prolonging the service life of centrifugal pumps.

Description

A conveying device for ice slurry cleaning system Technical Field

[0001] The present invention relates to the technical field of ice slurry cleaning, and in particular to a conveying device for an ice slurry cleaning system. Background Art

[0002] Existing conveying devices used in ice slurry cleaning systems are centrifugal pumps, comprising a volute, an impeller, and a rotating shaft. The impeller is mounted within the volute and on the rotating shaft. The volute includes a pump housing and a pump cover. A liquid inlet pipe is provided in the middle of the outer side of the pump cover, a liquid outlet pipe is provided on the outer side of the pump housing, and a pressure chamber is provided on the inner circumference of the pump housing. The pressure chamber is located on the outer circumference of the impeller. The impeller includes a rear disc, a front disc, and blades. Multiple blades are distributed circumferentially and connected between the rear disc and the front disc. The blades have leading and trailing edges and include a first blade, a second blade, and / or a third blade. The first, second, and / or third blades have different lengths. However, existing centrifugal pumps still suffer from uneven pressure distribution in the pressure chamber due to turbulence (or large pressure differences at multiple points in the pressure chamber) and poor anti-cavitation performance. Technical Solutions

[0003] The present invention aims to overcome the shortcomings of the prior art by providing a conveying device for an ice slurry cleaning system. This device, through the design of a centrifugal pump's diverter ring, can reduce or minimize uneven pressure distribution (or large pressure differences at multiple points in the pressurized water chamber) and the resulting vibration caused by turbulent flow at the impeller outlet and in the pressurized water chamber, thereby improving the centrifugal pump's operational stability and service life. The design of the first, second, and third leading edges enhances the centrifugal pump's anti-cavitation performance, thereby extending the pump's service life.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A conveying device for an ice slurry cleaning system, the conveying device is a centrifugal pump, comprising a volute (1), an impeller (2), and a rotating shaft (3), wherein the impeller is mounted in the volute and mounted on the rotating shaft, the volute comprising a pump housing (11), a pump cover (12), an axial liquid inlet pipe (13) being provided in the middle of the outer side of the pump cover, a radial liquid outlet pipe (14) being provided on the outer side of the pump housing, and a pressure water chamber (15) being provided on the inner peripheral side of the pump housing, the pressure water chamber being located on the outer peripheral side of the impeller, and the impeller comprising a rear disc (21), a front disc ( 22), blades (23), multiple blades are distributed along the circumferential direction and connected between the rear disc and the front disc, and the blades have a leading edge (25) and a trailing edge (26); characterized in that: in the axial direction, a diverter wall (16) is provided in the middle of the pressure water chamber (15), an annular mounting groove (18) is provided on the radial inner side of the diverter wall, a diverter ring (17) is installed in the annular mounting groove, and a matching groove (28) is provided on the trailing edge side of the blade, the radial outer end of the diverter ring is embedded in the annular mounting groove, and the radial inner end is inserted into the matching groove.

[0006] Furthermore, grooves (19) are provided on the inner circumferential side of the diverter ring (17), and the plurality of grooves are evenly distributed along the circumferential direction.

[0007] Furthermore, the diverter ring (17) is a circumferential integral ring structure or a plurality of segment ring structures. The diverter ring (17) is made of elastic material. During installation, the diverter ring can be easily embedded in the annular installation groove by virtue of a certain elastic deformation of the diverter ring. After the diverter ring is embedded in the annular installation groove, it is fixed using a plurality of connecting pieces.

[0008] Furthermore, the groove (19) is generally in a rectangular structure or an arc-shaped structure.

[0009] Furthermore, the diverter ring (17) has a radial length H, the groove (19) has a radial depth h, the groove has a circumferential width w, h<w<H; and h=(0.1-0.3)H, w=(0.45-0.65)H.

[0010] Furthermore, the matching groove (28) has a radial depth hx, where hx=(0.35-0.55)H.

[0011] Furthermore, the outlet section of the impeller (2) is provided with a diffuser (27), the diffuser comprising a first inclined surface provided on the inner side surface of the front disc (22) and a second inclined surface provided on the inner side surface of the rear disc (21), the diffuser having a cone angle a, a=3-13°, the pressure water chamber (15) comprising a first wall surface (151) and a second wall surface (152) provided opposite to each other, an extension line of the first inclined surface passing through the radial inner end point of the first wall surface, and an extension line of the second inclined surface passing through the radial inner end point of the second wall surface.

[0012] Furthermore, the leading edge (25) includes a first leading edge (251), a second leading edge (252), and a third leading edge (253); the outer diameter of the trailing edge (26) of each blade is equal; and the inclination angles of the first leading edge, the second leading edge, and the third leading edge relative to the inner side surface of the rear disc (21) are different.

[0013] Furthermore, the first leading edge (251), the second leading edge (252), and the third leading edge (253) respectively have inclination angles b1, b2, and b3 relative to the inner side surface of the rear disc (21), and b1>b2>b3. In the circumferential direction, the first leading edge, the second leading edge, and the third leading edge are arranged in a staggered manner in sequence. Beneficial effects

[0014] The present invention's conveying device for an ice slurry cleaning system utilizes a centrifugal pump's diverter ring design to reduce or minimize uneven pressure distribution (or large pressure differences between multiple points in the pressurized water chamber) and the resulting vibrations caused by turbulent flow at the impeller outlet and in the pressurized water chamber, thereby improving the centrifugal pump's operational stability and service life. The groove design further reduces or minimizes uneven pressure distribution and the resulting vibrations caused by turbulent flow at the impeller outlet and in the pressurized water chamber, thereby improving the centrifugal pump's operational stability and service life.

[0015] The diverter ring of the present invention is a circumferential integral ring structure or a multi-segment ring structure. The diverter ring is made of elastic material. During installation, the diverter ring can be easily embedded in the annular installation groove by virtue of its certain elastic deformation.

[0016] The present invention can improve the anti-cavitation performance of the centrifugal pump through the design of the first leading edge, the second leading edge and the third leading edge, thereby increasing the service life of the centrifugal pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic structural diagram of a delivery pump for an ice slurry cleaning system according to the present invention;

[0018] FIG2 is a schematic diagram of a partial structure of a delivery pump for an ice slurry cleaning system according to the present invention;

[0019] FIG3 is a schematic diagram of the structure of the diverter ring of the present invention;

[0020] FIG4 is a schematic structural diagram of another embodiment of the diverter ring of the present invention.

[0021] In the figure: volute 1, impeller 2, rotating shaft 3, pump housing 11, pump cover 12, liquid inlet pipe 13, liquid outlet pipe 14, water pressure chamber 15, first wall 151, second wall 152, diverter wall 16, diverter ring 17, annular mounting groove 18, groove 19 (19'), rear disc 21, front disc 22, blade 23, back blade 24, leading edge 25, trailing edge 26, first leading edge 251, second leading edge 252, third leading edge 253, diffuser 27, matching groove 28. Best Mode for Carrying Out the Invention

[0022] To make the technical solution and its advantages of the present invention more clear, the technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of the present invention and are only used to explain the present invention, not to limit the present invention. It should be noted that, for ease of description, the accompanying drawings only show the parts / structures related to the present invention. Other related parts can refer to the general design. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0023] All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention. Furthermore, unless otherwise defined, technical or scientific terms used in the description of the present invention shall have the same meanings as those generally understood by persons of ordinary skill in the art to which the present invention belongs.

[0024] The present invention will be described in further detail below with reference to the accompanying drawings.

[0025] As shown in Figures 1-4, a conveying device for an ice slurry cleaning system is a centrifugal pump, which includes a volute 1, an impeller 2, and a rotating shaft 3. The impeller 2 is installed in the volute 1 and on the rotating shaft 3. The volute 1 includes a pump housing 11 and a pump cover 12. An axial liquid inlet pipe 13 is provided in the middle of the outer side of the pump cover 12. A radial liquid outlet pipe 14 is provided on the outer side of the pump housing 11, and a pressure chamber 15 is provided on the inner peripheral side of the pump housing 11. The pressure chamber 15 is located on the outer peripheral side of the impeller 2. The impeller 2 includes a rear disc 21 and a front disc 22. 22. Blades 23. Multiple blades 23 are distributed along the circumferential direction and connected between the rear disc 21 and the front disc 22. The blades 23 have a leading edge 25 and a trailing edge 26. The characteristics are as follows: in the axial direction, a diverter wall 16 is provided in the middle of the water pressure chamber 15, and an annular mounting groove 18 is provided on the radial inner side of the diverter wall 16. A diverter ring 17 is installed in the annular mounting groove 18. A matching groove 28 is provided on the trailing edge side of the blade 23. The radial outer end of the diverter ring 17 is embedded in the annular mounting groove 18, and the radial inner end is inserted into the matching groove 28.

[0026] The conveying device for an ice slurry cleaning system of the present invention can reduce / reduce the uneven pressure distribution (or large pressure difference at multiple points in the pressure chamber 15) and the resulting vibration caused by turbulence on the outlet side of the impeller 2 and the pressure chamber 15 through the design of the diverter ring 17 of the centrifugal pump (the radial outer end of the diverter ring 17 is embedded in the annular mounting groove 18, and the radial inner end is inserted into the matching groove 28), thereby improving the operating stability and service life of the centrifugal pump.

[0027] Furthermore, grooves 19 are provided on the inner circumference of the diverter ring 17, with multiple grooves 19 evenly distributed along the circumference. The present invention, through the design of grooves 19, can further reduce / minimize uneven pressure distribution (or large pressure differences at multiple points in the pressure chamber 15) and the resulting vibration caused by turbulence at the outlet of the impeller 2 and the pressure chamber 15, thereby improving the operating stability and service life of the centrifugal pump.

[0028] The diverter ring 17 is a circumferential integral ring structure or a multi-segment ring structure. The diverter ring 17 is made of elastic material. During installation, with the help of a certain elastic deformation of the diverter ring 17, it is easy to embed the diverter ring 17 into the annular mounting groove 18. After the diverter ring 17 is embedded in the annular mounting groove 18, it is fixed using multiple connectors (such as threaded connectors).

[0029] As shown in FIG3-4 , the groove 19 is generally rectangular or arc-shaped.

[0030] The diverter ring 17 has a radial length H, the groove 19 has a radial depth h, and the groove 19 has a circumferential width w, h<w<H; specifically, h=(0.1-0.3)H, preferably 0.2, w=(0.45-0.65)H, preferably 0.53.

[0031] The fitting groove 28 has a radial depth hx, where hx=(0.35-0.55)H, preferably 0.45.

[0032] As shown in Figure 2, further, the outlet section of the impeller 2 is provided with a diffuser 27, which includes a first inclined surface provided on the inner side of the front disk 22 and a second inclined surface provided on the inner side of the rear disk 21. The diffuser 27 has a cone angle a, a=5-10°, and the water pressure chamber 15 includes a first wall 151 and a second wall 152 that are arranged opposite to (or in parallel with) each other. The extension line of the first inclined surface passes through the radial inner end point of the first wall 151, and the extension line of the second inclined surface passes through the radial inner end point of the second wall 152.

[0033] The leading edge 25 includes a first leading edge 251 , a second leading edge 252 , and a third leading edge 253 . The outer diameter of the trailing edge 26 of each blade 23 is equal, and the inclination angles of the first leading edge 251 , the second leading edge 252 , and the third leading edge 253 relative to the inner side of the rear disk 21 are different.

[0034] Furthermore, the first leading edge 251, the second leading edge 252, and the third leading edge 253 have inclination angles b1, b2, and b3 relative to the inner side surface of the rear disc 21, respectively, and b1>b2>b3. In the circumferential direction, the first leading edge 251, the second leading edge 252, and the third leading edge 253 are arranged in a staggered manner in the circumferential direction, such as first leading edge 251, second leading edge 252, third leading edge 253, first leading edge 251, second leading edge 252, third leading edge 253, first leading edge 251, second leading edge 252, third leading edge 253, .... The present invention can improve the anti-cavitation performance of the centrifugal pump through the design of the first leading edge 251, second leading edge 252, and third leading edge 253, thereby increasing the service life of the centrifugal pump.

[0035] The present invention relates to a conveying device for an ice slurry cleaning system. Through the design of a centrifugal pump's diverter ring 17 (the radially outer end of the diverter ring 17 is embedded in an annular mounting groove 18, and the radially inner end is inserted into a mating groove 28), this device can reduce or minimize uneven pressure distribution (or large pressure differences between multiple points in the pressurized water chamber 15) and the resulting vibration caused by turbulence at the outlet of the impeller 2 and in the pressurized water chamber 15, thereby improving the operational stability and service life of the centrifugal pump. The design of the groove 19 further reduces or minimizes uneven pressure distribution (or large pressure differences between multiple points in the pressurized water chamber 15) and the resulting vibration caused by turbulence at the outlet of the impeller 2 and in the pressurized water chamber 15, thereby improving the operational stability and service life of the centrifugal pump.

[0036] The diverter ring 17 of the present invention is a circumferential integral ring structure or a multi-segment ring structure. The diverter ring 17 is made of elastic material. During installation, the diverter ring 17 can be easily embedded in the annular installation groove 18 by virtue of a certain elastic deformation of the diverter ring 17.

[0037] The present invention can improve the anti-cavitation performance of the centrifugal pump through the design of the first leading edge 251, the second leading edge 252, and the third leading edge 253, thereby increasing the service life of the centrifugal pump.

[0038] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The "connection" mentioned above can be a direct connection or an indirect connection, and the "setting", "setting at", and "setting at" can be directly set at or indirectly set at.

[0039] The above-mentioned embodiments are illustrative of the present invention, not limiting thereof. It is understood that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A conveying device for an ice slurry cleaning system, the conveying device being a centrifugal pump, comprising a volute (1), an impeller (2), and a rotating shaft (3), the impeller being mounted in the volute and on the rotating shaft, the volute comprising a pump housing (11) and a pump cover (12), an axial liquid inlet pipe (13) being arranged at the middle of the outer side of the pump cover, a radial liquid outlet pipe (14) being arranged at the outer side of the pump housing, and a water pressure chamber (15) being arranged at the inner circumference of the pump housing, the water pressure chamber being located at the outer circumference of the impeller, the impeller comprising a rear disc (21), a front disc (22), and blades (23), a plurality of blades being distributed along the circumferential direction and connected between the rear disc and the front disc, and the blades having a leading edge (25) and a trailing edge (26); Features: In the axial direction, a diverter wall (16) is provided in the middle of the water pressure chamber (15), an annular mounting groove (18) is provided on the radial inner side of the diverter wall, a diverter ring (17) is installed in the annular mounting groove, a matching groove (28) is provided on the trailing edge side of the blade, the radial outer end of the diverter ring is embedded in the annular mounting groove, and the radial inner end is inserted into the matching groove.

2. A conveying device for an ice slurry cleaning system according to claim 1, characterized in that: The inner circumferential side of the diverter ring (17) is provided with grooves (19), and a plurality of grooves are evenly distributed along the circumferential direction.

3. A conveying device for an ice slurry cleaning system according to claim 2, characterized in that: The diverter ring (17) is a circumferential integral ring structure or a plurality of segment ring structures. The diverter ring (17) is made of elastic material. During installation, the diverter ring can be easily embedded in the annular installation groove by virtue of a certain elastic deformation of the diverter ring. After the diverter ring is embedded in the annular installation groove, it is fixed by using a plurality of connecting pieces.

4. A conveying device for an ice slurry cleaning system according to claim 3, characterized in that: The groove (19) is generally in a rectangular structure or an arc-shaped structure.

5. A conveying device for an ice slurry cleaning system according to claim 4, characterized in that: The diverter ring (17) has a radial length H, the groove (19) has a radial depth h, the groove has a circumferential width w, h<w<H; and h=(0.1-0.3)H, w=(0.45-0.65)H.

6. A conveying device for an ice slurry cleaning system according to claim 5, characterized in that: The matching groove (28) has a radial depth hx, where hx=(0.35-0.55)H.

7. The conveying device for an ice slurry cleaning system according to claim 1, characterized in that: The outlet section of the impeller (2) is provided with a diffuser (27), the diffuser comprising a first inclined surface provided on the inner side surface of the front disc (22) and a second inclined surface provided on the inner side surface of the rear disc (21), the diffuser having a cone angle a, a=3-13°, the pressure water chamber (15) comprising a first wall surface (151) and a second wall surface (152) provided opposite to each other, an extension line of the first inclined surface passing through a radial inner end point of the first wall surface, and an extension line of the second inclined surface passing through a radial inner end point of the second wall surface.

8. A conveying device for an ice slurry cleaning system according to claim 7, characterized in that: The leading edge (25) comprises a first leading edge (251), a second leading edge (252), and a third leading edge (253); the outer diameters of the trailing edges (26) of each blade are equal; and the first leading edge, the second leading edge, and the third leading edge have different inclination angles relative to the inner side surface of the rear disc (21).

9. A conveying device for an ice slurry cleaning system according to claim 8, characterized in that: The first front edge (251), the second front edge (252), and the third front edge (253) have inclination angles b1, b2, and b3 relative to the inner side surface of the rear disc (21), respectively, and b1>b2>b3. In the circumferential direction, the first front edge, the second front edge, and the third front edge are arranged in a staggered manner in sequence.

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